Nonturnable spud



May 15, 1951 TRAGESER 2,553,342

NONTURNABLE- SPUD Filed June 1, 1949 IN V EN TOR. ALBERT hf TRAGESER F15Q NE,

A T TORNE Y5 Patented May 15,1951

N ONTURNABLE SPUD Albert H. Trageser, Manhasset, N. Y., assignor toTrageser. Copper Works, Inc., Maspeth, N. Y.,

a corporation Application June 1, 1949, Serial No. 96,474

6 Claims.

The present invention relates to lined water heaters or boilers and moreparticularly to such heater or boiler which comprises an outer steelshell and a comparatively thin metal lining, usually made of sheetcopper.

One object of the present invention is to provide a lined water heaterwith spuds which are of such construction and are so connected to theshell and to the lining as to prevent impairment of the connection.between the spud and the lining and to prevent damage to the liningespecially when the pipe connections to the boiler are being made.

More specifically it is an object of the present invention to provide aspud connection which is of such construction and is so related to theouter shell of the boiler as to prevent the spud from being turned aboutits axis by force applied to the spud in connecting the water inlet oroutlet pipe thereto.

A further object is generally to provide a lined tank with a spudconnection of improved construction.

The above and other objects, features and advantages of the inventionwhich might hereinafter appear will be fully understood from thefollowing description considered in connection with the accompanyingillustrative drawings.

In the drawings:

Fig. 1 is a side elevation view of a water heater embodying the presentinvention;

Fig. 2 is a view on a larger scale of a spud connection and the adjacentpart of the heater;

Fig. 3 is a sectional view on the line 3-3 of Fig. 2, showing the spudin elevation;

Fig. 4 is a view similar to Fig. 2, the outer spudfastening nut beingremoved for the purpose of illustration;

Fig. 5 is a sectional view on the line 55 of Fig. 2.

Briefly described, the tank or container of the present invention hereshown as a water heater or boiler H3, comprises an outer steel shell I 2having a copper lining l4 and provided with a plurality of spuds It forconnection to the boiler of the several water inlet and outlet pipes(not shown). As the lining i4 is formed of thin sheet copper or othersuitable metal or material which is relatively weak or fragile incomparison with the steel shell 52, and as the spud connections It musteach have a fluid-tight joint with the lining, it is of the utmostimportance that provision be made for protecting the lining and thewatertight connections between the latter and the spuds againstimpairment under various conditions and especially when force is appliedto the spuds in connecting the water inlet and outlet pipes thereto.Pursuant to the present invention provision is made for preventing theapplication to the spud connections of any force whic would tend to turnthe spuds around their re ective longitudinal axes, as for example, whenthe water pipes are being connected to the spuds, in the installation ofthe water heater or at some other time.

Referring now to the drawings in greater detail, the spud It comprises atubular part I8 threaded internally, as indicated at 20 for connectionthereto of the companion water pipe. Said spud has a fluid-tightconnection with the adjacent part of the lining M of the boiler, and forthis purpose the flange 22 of said spud is brazed or otherwise securedand sealed to themripheral portion 24 of the lining completely aroundthe opening 26 through which the tubular part 58 of the spud projects.The outer surface of tubular part l8 and the edge 28 of the opening 2%in the shell l2 and lining M are shaped, in complemental relation, insuch manner as to prevent turning of the spud axially of opening 26.More specifically, said edge 28 of the opening and the outer surface oftubular part l8 of the spud are both non-circular and interfit so as toprevent turning of said spud in the opening 26. While the non-circularconfiguration of the edge 28 of the opening and the outer surface oftubular part i 8 of the spud may vary, as will be readily understood,the presently preferred construction, as shown by the drawings,comprises the provision of one or more flat planar surfaces 32 on thetubular part 58 of the spud and the provision of correspondingrectilinear edge portions 34 on the edge 28 of the opening 26. The outercylindrical surface portions 36 of the spud are screw threaded forengagement by the nut 38 which secures the spud against the adjacentouter surface of the shell l2 around the opening 26 and preventsmovement of the spud longitudinally of the axis of the shell opening.

It will be understood that the water heater H], in respect to its outershelland its lining and the relation therebetween may be of any known orsuitable construction, and therefore does not require any specificillustration or description herein, particularly since the Water heaterand its lining considered apart from the spud connections of the presentinvention do not per se constitute part of the present invention. On theother hand, it is to be understood that the construction and arrangementof the spud connec- 3 tion with the lining and the outer shell inaccordance with the present invention, may be embodied in lined waterheaters or boilers or other tanks or containers of any of the variousknown or suitable constructions.

While I have shown and described the preferred embodiment of myinvention it will be understood that various changes in the details ofconstruction and in the form and arrangement of parts may be madewithout departing from the underlying idea or principles of theinvention within the scope of the appended claims.

Having thus described my invention, what 1 claim and desire to secure byLetters Patent is:

1. A heater comprising ahard outer shell and a softer inner lining withregistering openings therethrough for communication of the interior ofthe heater with a pipe, and a spud having'a fluid tight joint with saidlining and being provided with a tubular part projecting through saidregistering openings of the lining and shell for -the.connection of saidpipe thereto, the edge of said shell at said opening thereof beingnon-cir- ,cular and said tubular part of the spud having a non-circularouter portion fitted in said shell open-ing whereby the shell preventsturning of the spud axially of said shell opening, said tubu- .lar parthaving outer screw-threaded portions coextensive at least in part withsaid non-circular portion of said tubular part axially of the latter,and a nut threadedonsaid tubular part and engaging the outer surfaceof'the shell around the shell opening for securing the spud to the shelland thereby preventing movement of the spud longitudinally of the axisof theshell opening.

2. A heater comprising a hard outer shell and 'a softer inner liningwith registering openings therethrough for communication of the interiorof the heater with a pipe, and a spud having a fluid tight joint withsaidlining and being provided with a tubular part projecting throughsaid registering openings of the lining and shell for the connection ofsaid pipe thereto, said shell and said tubular part having non-circularinterengaging parts at said shell opening to prevent turning of the spudaxially of said opening of the shell, said tubular part having outerscrewthreaded portions coextensive at least in part with saidnon-circular part of said tubular part axially of the latter, and a nutthreaded on said tubular part and engaging the outer surface of theshell around the shell opening for securing the spud to the shell andthereby preventing movement of the spud longitudinally of the axis ofthe shell opening. 3. A heater comprising a hard outer shell an a softerinner lining withregistering openings therethrough for communication ofthe interior of the heater with a pipe, and a spud having a fluid tightjoint with said lining and being provided with a tubular part projectingthrough said registering openings of the lining and shell for theconnection of said pipe thereto, said shell and said tubular part havingfixed parts, respectively, in interengagement with eaoh'other to preventturning of the spud axially of said opening of the shell, said tubularpart having outer screw-threaded portions coextensive at least'in partwith said fixed part of said tubular .4 part axially of the latter, anda nut threaded on said tubular part and engaging the outer surface ofthe shell around the shell opening for securing the spud to the shelland thereby preventing movement of the spud longitudinally of the axisof the shell opening.

4. A heater comprising a hard outer shell and a softer inner lining withregistering openings therethrough for communication of the interior ofthe heater with a pipe, and a spud having a fluid tight joint with saidlining and being provided with a tubular part projecting through saidregistering openings of the-lining and shell for .the connection of,said pipe thereto, the edge of said shell at said opening thereofhaving opposite rectilinear portions and said tubular part of the spudhaving opposed outer flat portions in complemental interfitting relationwith said edge portions of the shell whereby the latter prevents turningof the spud axially of the shell opening, said tubular part having outerscrew-threaded portions between said flat portions, and a nut threadedon said tubular part and engaging the outer surface of the shell aroundthe shell opening for securing the spud to the shell and therebypreventing movement of the spud longitudinally of the axis of the shellopening.

5. A spud for a tank having an outer shell provided with a non-circularopening and a lining provided with an opening in registry with saidshell opening, said spud comprising anouter. peripheral part adapted tobe sealed to said lining around the opening thereof and a tubular partadapted toproject through the opening of the shell and having anon-circular outer peripheral portion adapted to interfit withthe shellopening and thereby held against turning about the ax of the tubularpart, said non-circular tubular .part having a screw-threaded arcuateportion for the tubular part, said non-circular tubular part havingcircumferentially spaced screw threaded arcuate portions adapted to have.a nut threaded thereon for clamping .the.spud to the shell ofthe tank.

ALBERT H. TRAGESER.

REFERENCES CITED The following references are of record in'the file ofthis patent:

UNITED STATES PATENTS Number Name 7 Date 431,791 Aldrich July 8, 1890556,755 Kelley Mar. 24, 1896 1,086,949 Speakman Feb.'l0, 1914 2,456,165Yuza Dec. 14,1948

